Title: Torque converter and slipping clutch assembly

Abstract: A torque converter and clutch assembly wherein the clutch is selectively maintained in slipping engagement with the torque converter input to provide a split torque drive in the assembly resulting in increased overall efficiency of the assembly. The engagement force of the clutch is proportional to the rearward axial thrust force on the turbine which thrust force is normally greatest when the converter is stalled and is imposed on a spring member which deflects proportionally to the thrust to control fluid flow to the disengagement side of the clutch through a variable restriction. The spring cooperates with a passage formed in the turbine hub, to form the variable restriction through which fluid must pass to enter the disengagement chamber of the clutch. The disengagement chamber has a fixed restriction exhaust passage so that the disengagement pressure is determined by the size of the variable restriction.

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Inventors: Cheek, Forrest R. (Detroit, MI, US)

Application Number: 603319
Filing Date: 1975-08-11
Publication_date: 1976-08-03
Assignee: General Motors Corporation (Detroit, MI)
Primary Class(es): 192/3.3 192/70.19
Other Classes:
US Patent Ref:

3730315

May, 1973

Annis et al.

192/3.

Other Refs:
Primary Examiner: Wyche, Benjamin W.
Assistant Examiner:
Attorney: Scherer; D. F.